Free Online PDF Compressor
Reduce PDF file size
Drop a PDF here or click to browse
Client-side compression — your file stays in your browser
Note: Client-side PDF compression works by re-serializing the document and stripping metadata. Results vary depending on the original file — PDFs with embedded fonts and images may see minimal reduction. For heavy compression of image-rich PDFs, a server-side tool would be more effective.
About Compress PDF
Reduce PDF file size for easier sharing and faster uploads. Optimizes images and streams within the PDF while preserving text quality. No server uploads required.
How to Use Compress PDF
- 1
Upload a PDF
Select the PDF file you want to compress.
- 2
Choose compression level
Select a balance between file size and quality.
- 3
Download compressed PDF
Save the optimized PDF to your device.
Frequently Asked Questions
Is my data safe?
Yes. All processing happens entirely in your browser. Your data never leaves your device and is never uploaded to any server.
Will compression affect text quality?
No. Text and vector graphics remain sharp. Only embedded images are recompressed.